You’d think that Hillary Clinton couldn’t ask for a better friend than Barack Obama, who recently declared that her use of an unsecure email system “has not jeopardized America’s national security.”

But you’d think wrong.

A source close to Hillary tells me that she’s upset with the president, because she’s heard that Obama has been giving Bernie Sanders campaign tips on the QT.

Why, you might ask, would Obama hand Hillary a Get Out of Jail Free Card on the FBI’s email investigation while he helps Bernie drag out the Democratic Party primary race?

The answer: He knows that once Hillary clinches the nomination, which he believes is inevitable, she will become the de facto head of the Democratic Party and his influence will be significantly diminished.

And so, while he happily watches Hillary and Bernie duke it out all the way to the July convention in Philadelphia, Obama has been a busy bee.

He’s organized international summits on nuclear non-proliferation and climate change, thumbed his nose at Congress on immigration, and unilaterally put into effect new rules governing “corporate inversions” (making it harder for American companies to move their headquarters overseas) and financial investment advisers.